CN108896113A - A kind of multiple dimensioned voltage of converter valve photo thyristor and temperature monitoring unit - Google Patents
A kind of multiple dimensioned voltage of converter valve photo thyristor and temperature monitoring unit Download PDFInfo
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- CN108896113A CN108896113A CN201810886179.3A CN201810886179A CN108896113A CN 108896113 A CN108896113 A CN 108896113A CN 201810886179 A CN201810886179 A CN 201810886179A CN 108896113 A CN108896113 A CN 108896113A
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- module
- fpga
- multiple dimensioned
- voltage
- thyristor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2503—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques for measuring voltage only, e.g. digital volt meters (DVM's)
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- General Physics & Mathematics (AREA)
- Power Conversion In General (AREA)
Abstract
The invention discloses a kind of multiple dimensioned voltage of converter valve photo thyristor and temperature monitoring units,TVM plate including being electrically connected to photo thyristor both ends by RC,The TVM plate includes AC division module,Direct current pressure module,Draw-out power supply module,Multiple dimensioned voltage monitoring module,FBG temperature sensor,FPGA and electro-optic conversion transmitter,One end of AC division module and RC circuit connection,The other end gives multiple dimensioned voltage monitoring module by draw-out power supply module,FBG temperature sensor,FPGA and the power supply of electro-optic conversion transmitter,One end of direct current pressure module and RC circuit connection,The other end is connect by multiple dimensioned voltage monitoring module with FPGA,The probe of FBG temperature sensor is mounted on the spreader surface of photo thyristor,Output end is connect with FPGA,FPGA is connect by electro-optic conversion transmitter with VBE device.The present invention, to the continuous voltage monitoring at thyristor both ends and to the temperature monitoring of thyristor cooling fin, solves the insufficient defect of existing TVM plate measurement function by increase.
Description
Technical field
The present invention relates to direct-current power transmission control protection system fields, and in particular to a kind of converter valve photo thyristor is multiple dimensioned
Voltage and temperature monitoring unit are responsible for being monitored the multiple dimensioned voltage and temperature rise situation at photo thyristor both ends.
Background technique
Thyristor voltage detection circuit (TVM) is one of photo thyristor (LTT) control system main component, each crystalline substance lock
The design of pipe grade has a TVM plate, corresponds with thyristor on valve.The electric current that TVM circuit constitutes the thyristor grade pushes back road,
Thyristor both end voltage is monitored simultaneously and generates corresponding return signal and is transmitted to VBE (valve base
Electronics valve-based electronics) device.
Generally there is existing TVM plate forward voltage to establish monitoring, negative voltage establishes monitoring, BOD overvoltage protection prison
Brake, and the information of its return is distinct pulse widths pulse form, but finds to have the following disadvantages in engineer application：
1, voltage of the thyristor both end voltage in 3 kinds of threshold conditions is only acquired, cannot reflect real-time thyristor both ends
Voltage change situation and thyristor temperature rise situation, cause its monitoring function insufficient.
2, reported information is the pulse of distinct pulse widths, is easy to be become by the interference such as inherent device aging and external radiation
Shape, it is possible to leading to the misrecognition of VBE device, while pulse is also unfavorable for loading more other informations.
3, the component on plate is all discrete device, is formed after the completion of production, is unfavorable for the debugging and exploitation in later period.
In view of this, the existing technology has yet to be improved and developed.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of multiple dimensioned voltage of converter valve photo thyristor and temperature monitoring
Unit realizes the monitoring to thyristor both ends multiple dimensioned voltage and temperature.
To achieve the above object, the technical scheme is that：
A kind of multiple dimensioned voltage of converter valve photo thyristor and temperature monitoring unit, including be electrically connected to by RC light-operated
The TVM plate at thyristor both ends, the TVM plate include AC division module, direct current pressure module, draw-out power supply module, multiple dimensioned electricity
Monitoring modular, FBG temperature sensor, FPGA and electro-optic conversion transmitter, one end of AC division module and RC circuit connection are pressed, separately
One end is supplied by draw-out power supply module to multiple dimensioned voltage monitoring module, FBG temperature sensor, FPGA and electro-optic conversion transmitter
Electricity, one end of direct current pressure module and RC circuit connection, the other end are connect by multiple dimensioned voltage monitoring module with FPGA, FBG
The probe of temperature sensor is mounted on the spreader surface of photo thyristor, and output end is connect with FPGA, and FPGA is turned by electric light
Emitter is changed to connect with VBE device.
Further, the multiple dimensioned voltage monitoring module includes that negative voltage establishes monitoring modular, positive voltage establishes prison
Survey module, monitoring modular and continuous voltage monitoring modular occur for BOD movement.By the monitoring of continuous voltage it can be concluded that single valve is sub
The real-time of each thyristor presses situation in module, facilitates predicting long-term and runs the failure occurred by device quality gradual change.
Further, the HDLC communications protocol information transmitting terminal mouth of the electro-optic conversion transmitter and FPGA connect.
FPGA sends reported information to VBE device using HDLC communications protocol, realizes the function that much information fusion uploads, enhancing letter
Anti-interference ability is ceased, the information bit error rate is reduced.
It is other module for power supply invention increases draw-out power supply module, increases continuous voltage monitoring modular and reflect brilliant lock
The real-time voltage at pipe both ends changes, and increases the temperature rise situation of FBG temperature sensor reflection thyristor, is replaced originally with FPGA
Pulse generating circuit realizes that the integrated treatment to much information has the following advantages that compared with prior art：
1, using FBG temperature sensor, temperature information can be measured in the case where not by electric jamming, obtains thyristor
Temperature rise situation realizes overtemperature alarm function.
2, multiple dimensioned voltage monitoring module, which is not only realized, occurs forward voltage foundation, negative voltage foundation, BOD movement
The monitoring of accurate threshold also achieves the monitoring to continuous voltage, and is obtained in single valve submodule by the monitoring of continuous voltage
Each thyristor presses situation in real time.
3, monitoring signals are handled using FPGA, convenient for the debugging and exploitation in later period, is believed return using HDLC communications protocol
Breath is sent to VBE device, so that reported information content is more abundant, interference free performance enhancing, bit error rate reduction.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is 5 kind signal processing logic schematic diagrames of the FPGA to acquisition.
Specific embodiment
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Embodiment 1
As shown in Figure 1, the multiple dimensioned voltage of a kind of converter valve photo thyristor of the invention and temperature monitoring unit, main body are
One is electrically connected to the TVM plate at photo thyristor both ends by RC comprising AC division module, takes energy at direct current pressure module
Power module, multiple dimensioned voltage monitoring module, FBG temperature sensor, FPGA and electro-optic conversion transmitter.The one of AC division module
End and RC circuit connection, the other end give multiple dimensioned voltage monitoring module, FBG temperature sensor, FPGA by draw-out power supply module
It powers with electro-optic conversion transmitter, one end of direct current pressure module and RC circuit connection, the other end pass through multiple dimensioned voltage monitoring
Module is connect with FPGA, and the probe of FBG temperature sensor is mounted on the spreader surface of photo thyristor, and output end and FPGA connect
It connects, the HDLC communications protocol information transmitting terminal mouth of FPGA is connect with electro-optic conversion transmitter, and electro-optic conversion transmitter passes through optical fiber
It is connect with VBE device.
FBG temperature sensor changes the wavelength of the light wave of its reflection, and wavelength according to the temperature change of thyristor cooling fin
There are mapping relations one by one with temperature, by wavelength change incremental processing temperature change as a result, realizing to photo thyristor temperature rise
Detection.Concrete principle is the prior art, and details are not described herein.
Multiple dimensioned voltage monitoring module includes that negative voltage establishes monitoring modular, positive voltage establishes monitoring modular, BOD movement hair
Raw monitoring modular and continuous voltage monitoring modular are not only realized and forward voltage foundation, negative voltage foundation, BOD movement occur
Accurate threshold monitoring, also achieve the monitoring to continuous voltage, and single valve submodule is obtained by the monitoring of continuous voltage
Interior each thyristor presses situation in real time, facilitates predicting long-term and runs the failure occurred by device quality gradual change.Each module
The realization of function be existing conventional circuit structure, details are not described herein.
As shown in Fig. 2, FPGA inter-process forward voltage is established, negative voltage is established, BOD movement occurs, thyristor two
End continuous voltage and thyristor heatsink temperature information setting have priority, wherein when negative voltage is established, positive voltage is established, BOD
Movement occur when, priority processing and upload these three information, other two kinds of information aforementioned three kinds of information there is no when handle
And upload.FPGA uses HDLC communications protocol to VBE device upload information, so that reported information content is more abundant, anti-interference
Performance enhancement, the bit error rate reduce.
The specific operation logic of monitoring unit of the present invention is as follows：
During converter valve operates normally, each thyristor pole both end voltage can change, and thyristor is also logical
Generate heat during stream, need to acquire thyristor forward voltage establishes signal, negative voltage establishes signal, BOD movement occur signal,
Thyristor both ends continuous voltage signal, thyristor heatsink temperature signal.TVM plate will be measured out extremely by AC division module,
Voltage signal is taken out by direct current pressure module, is taken out by FBG temperature sensor thyristor heatsink temperature signal.?
Inside TVM, voltage is become the supply voltage of various grades by draw-out power supply module, is powered to modules；Multiple dimensioned voltage prison
Above-mentioned 3 kinds of threshold voltages and continuous voltage signal can be acquired by surveying module, and these voltage signals are converted to digital signal and are passed
To FPGA；The wavelength variable quantity that FBG collecting fiber is returned is demodulated to temperature value by FBG temperature sensor, and is converted to digital letter
Number it is transmitted to FPGA；FPGA receives above-mentioned multiple dimensioned voltage signal and temperature signal, carries out logic synthesis processing, at signal logic
Reason have priority, wherein when forward voltage establish, negative voltage establish, BOD movement occur when, priority processing and upload this three
Kind of information, other two kinds of information aforementioned three kinds of information there is no when handle and upload.FPGA upload various signals when
It waits, various signals is sent by the way of HDLC protocol, by electro-optic conversion transmitter, signal is transmitted to VBE device.
The present invention is by increase to the continuous voltage monitoring at thyristor both ends and to the temperature monitoring of thyristor cooling fin, solution
Certainly existing TVM plate measures the insufficient defect of function；By the way that discrete decision circuitry is replaced with FPGA programmable gate array
Chip solves the defect that can not further develop；FPGA reported information can be filled by way of HDLC protocol to VBE simultaneously
It sets, so that the content of information is more abundant.
Simply to illustrate that technical concepts and features of the invention, its purpose is allows in the art above-described embodiment
Those of ordinary skill cans understand the content of the present invention and implement it accordingly, and it is not intended to limit the scope of the present invention.It is all
It is the equivalent changes or modifications that the essence of content according to the present invention is made, should be covered by the scope of protection of the present invention.
Claims (3)
1. a kind of multiple dimensioned voltage of converter valve photo thyristor and temperature monitoring unit, including light-operated crystalline substance is electrically connected to by RC
The TVM plate at brake tube both ends, it is characterised in that：The TVM plate include AC division module, direct current pressure module, draw-out power supply module,
Multiple dimensioned voltage monitoring module, FBG temperature sensor, FPGA and electro-optic conversion transmitter, one end of AC division module and RC electricity
Road connection, the other end are turned by draw-out power supply module to multiple dimensioned voltage monitoring module, FBG temperature sensor, FPGA and electric light
Change emitter power supply, one end of direct current pressure module and RC circuit connection, the other end by multiple dimensioned voltage monitoring module and
FPGA connection, the probe of FBG temperature sensor are mounted on the spreader surface of photo thyristor, and output end is connect with FPGA,
FPGA is connect by electro-optic conversion transmitter with VBE device.
2. according to the multiple dimensioned voltage of converter valve photo thyristor described in claim 1 and temperature monitoring unit, it is characterised in that：Institute
The multiple dimensioned voltage monitoring module stated includes that negative voltage establishes monitoring modular, positive voltage establishes monitoring modular, BOD movement is supervised
Survey module and continuous voltage monitoring modular.
3. according to the multiple dimensioned voltage of converter valve photo thyristor described in claim 1 and temperature monitoring unit, it is characterised in that：Institute
The HDLC communications protocol information transmitting terminal mouth for the electro-optic conversion transmitter and FPGA stated connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810886179.3A CN108896113A (en) | 2018-08-06 | 2018-08-06 | A kind of multiple dimensioned voltage of converter valve photo thyristor and temperature monitoring unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810886179.3A CN108896113A (en) | 2018-08-06 | 2018-08-06 | A kind of multiple dimensioned voltage of converter valve photo thyristor and temperature monitoring unit |
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| Publication Number | Publication Date |
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| CN108896113A true CN108896113A (en) | 2018-11-27 |
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| CN201810886179.3A Pending CN108896113A (en) | 2018-08-06 | 2018-08-06 | A kind of multiple dimensioned voltage of converter valve photo thyristor and temperature monitoring unit |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05322662A (en) * | 1992-05-26 | 1993-12-07 | Toshiba Corp | Detecting apparatus of temperature of thyristor |
| CN201130234Y (en) * | 2007-12-21 | 2008-10-08 | 西安电力机械制造公司 | Circuit structure of voltage monitoring plate of DC transmission thyristor flow-exchanging valve |
| CN103227506A (en) * | 2013-03-25 | 2013-07-31 | 国网智能电网研究院 | Triggering and monitoring unit of converter valve thyristor |
| CN107390006A (en) * | 2017-06-30 | 2017-11-24 | 中国西电电气股份有限公司 | A kind of light-operated converter valve thyristor voltage monitoring unit |
| JP2018023206A (en) * | 2016-08-02 | 2018-02-08 | 東芝三菱電機産業システム株式会社 | Thyristor converter and thyristor failure detection method for the same |
| CN108051718A (en) * | 2017-11-28 | 2018-05-18 | 中国西电电气股份有限公司 | A kind of light-operated converter valve thyristor voltage monitoring unit based on integrated circuit |
| CN208765755U (en) * | 2018-08-06 | 2019-04-19 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of multiple dimensioned voltage of converter valve photo thyristor and temperature monitoring unit |
-
2018
- 2018-08-06 CN CN201810886179.3A patent/CN108896113A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05322662A (en) * | 1992-05-26 | 1993-12-07 | Toshiba Corp | Detecting apparatus of temperature of thyristor |
| CN201130234Y (en) * | 2007-12-21 | 2008-10-08 | 西安电力机械制造公司 | Circuit structure of voltage monitoring plate of DC transmission thyristor flow-exchanging valve |
| CN103227506A (en) * | 2013-03-25 | 2013-07-31 | 国网智能电网研究院 | Triggering and monitoring unit of converter valve thyristor |
| JP2018023206A (en) * | 2016-08-02 | 2018-02-08 | 東芝三菱電機産業システム株式会社 | Thyristor converter and thyristor failure detection method for the same |
| CN107390006A (en) * | 2017-06-30 | 2017-11-24 | 中国西电电气股份有限公司 | A kind of light-operated converter valve thyristor voltage monitoring unit |
| CN108051718A (en) * | 2017-11-28 | 2018-05-18 | 中国西电电气股份有限公司 | A kind of light-operated converter valve thyristor voltage monitoring unit based on integrated circuit |
| CN208765755U (en) * | 2018-08-06 | 2019-04-19 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | A kind of multiple dimensioned voltage of converter valve photo thyristor and temperature monitoring unit |
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